Re: [Boost-users] [bind] Member fn has defeated me

From: Peter Dimov (pdimov_at_[hidden])
Date: 2005-10-04 17:49:08

BRIDGES Dick wrote:

> class Bar {
>  typedef void (*pf)(bool);

If you make this

    typedef boost::function<void(bool)> pf;

> public:
>  Bar(pf fn){
>    fn(true);
>  }
> };
>
> int main( int argc, char **argv ) {
>
>  Bar bar_(foo); // ok.
>
>  X x;
>  Bar bar_(boost::bind(&X::f, &x)());  // compile fails.

then

  Bar bar_( boost::bind(&X::f, &x) );

should work. But you can't get an oridnary function pointer from 
boost::bind; a function pointer doesn't have enough state to represent &X::f 
+ &x.